CompTIA CompTIA Certifications LX0-103 Questions & Answers

• Question 71:

  Which grep command will print only the lines that do not end with a / in the file foo?

  A. grep '/$' foo

  B. grep '/#' foo

  C. grep -v '/$' foo

  D. grep -v '/#' foo

  Correct Answer: C

• Question 72:

  What is the difference between the i and a commands of the vi editor?

  A. i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switches modes automatically.

  B. i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor.

  C. i (independent rows) starts every new line at the first character whereas a (aligned rows) keeps the indentation of the previous line.

  D. i (interrupt) temporarily suspends editing of a file to the background whereas a (abort) terminates editing.

  Correct Answer: B

• Question 73:

  Which of the following commands moves and resumes in the background the last stopped shell job?

  A. run

  B. bg

  C. fg

  D. back

  Correct Answer: B

• Question 74:

  Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?

  A. <<

  B. <|

  C. !<

  D. and<

  Correct Answer: A

• Question 75:

  Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?

  A. file /tmp/myfile.txt

  B. echo "Hello" >/tmp/myfile.txt

  C. sed -ie "s/1/2/" /tmp/myfile.txt

  D. echo -n "Hello" >>/tmp/myfile.txt

  E. touch /tmp/myfile.txt

  Correct Answer: A

• Question 76:

  What is the default nice level when a process is started using the nice command?

  A. -10

  B. 10

  C. 20

  D. 0

  Correct Answer: B

• Question 77:

  What is the default action of the split command on an input file?

  A. It will break the file into new files of 1,024 byte pieces each.

  B. It will break the file into new files of 1,000 line pieces each.

  C. It will break the file into new files of 1,024 kilobyte pieces each.

  D. It will break the file into new files that are no more than 5% of the size of the original file.

  Correct Answer: B

• Question 78:

  In compliance with the FHS, in which of the directories are man pages found?

  A. /usr/share/man

  B. /opt/man

  C. /usr/doc/

  D. /var/pkg/man

  E. /var/man

  Correct Answer: A

• Question 79:

  Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?

  A. cat < myapp | cat > file1.log

  B. myapp 0>and1 | cat > file1.log

  C. myapp | cat > file1.log

  D. myapp | tee file1.log

  E. tee myapp file1.log

  Correct Answer: D

• Question 80:

  What is the purpose of the Bash built-in export command?

  A. It allows disks to be mounted remotely.

  B. It runs a command as a process in a subshell.

  C. It makes the command history available to subshells.

  D. It sets up environment variables for applications.

  E. It shares NFS partitions for use by other systems on the network.

  Correct Answer: D